I also didn't know about hour and never heard about it until now. It sounds like a small thing we can do to help the environment and might let more people be aware of it if there were some advertisements or something, but could see how thats hard because of it probably costing a lot of money to put it on as a commercial. Also, going to the people littering at the zoo, I don't see why it's so hard for some people to just walk a little out of their way to make the environment a little better.